What type of certificate do you need?
Intermediate Certificates
To use your certificates, you must have the intermediate signingcertificate in your system keychain. This is automatically installed by Xcode. However, if you need to reinstall the intermediate signing certificate click the link below:
使用你的证书，你的系统的钥匙串中必须具有中间签名证书。这是通过Xcode自动安装。但是，如果您需要重新安装中间签名证书，请单击下面的链接：下载 applewwdrca.cer
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